CONVEYING UNIT

摘要

A conveying unit having a pump chamber in which a rotor is mounted in a rotatable manner, and which is formed by a circumferential wall and two end walls, is already known. The circumferential wall is formed on an annular collar of a pump part and, on the inside, forms a track on which sealing bodies of a rotor roll. The track of the pump chamber is subjected to high compressive loading which, if the pump part is made of plastic, may result in the track rupturing. In the case of the conveying unit according to the invention, the pump part is improved in respect of strength and service life. Deformation of the pump part by hydraulic forces or by pressing-in forces is avoided. The invention provides that ribs (34) are arranged on the outside (33) of the circumferential wall (18), the outside being directed away from the pump chamber (12), or that arranged on that side of the end wall (20) which is directed away from the pump chamber is at least one shoulder (40) which is connected in a force-fitting manner, by means of a press fit, to the pump housing (1) and is designed with thin walls to the extent where the pressing forces do not result in any deformation to the end wall of the pump chamber (12).